Now, researchers at the University of Auckland in New Zealand are determining what the perfect cheese is to top your pizza with. Bryony James, a professor of materials engineering, set out to find out why different cheeses look and taste different when baked atop a pie—and they came to some interesting conclusions.

Check out the slideshow above to learn which cheese the researchers discovered is perfect for your pizza. Then, learn what the most popular pizza toppings in America are.